API for notification listener for Companioon apps

                android:value="true" />

        </activity>

        <!-- Confirmation dialog for enabling notification access from CompanionDeviceManager -->

        <activity android:name=".notification.NotificationAccessConfirmationActivity"

                  android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.Alert" />

        <receiver android:name=".widget.SettingsAppWidgetProvider"

                android:label="@string/gadget_title"

                android:exported="false"

/*

 * Copyright (C) 2017 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.android.settings.notification;

import static com.android.internal.notification.NotificationAccessConfirmationActivityContract

        .EXTRA_COMPONENT_NAME;

import static com.android.internal.notification.NotificationAccessConfirmationActivityContract

        .EXTRA_PACKAGE_TITLE;

import static com.android.internal.notification.NotificationAccessConfirmationActivityContract

        .EXTRA_USER_ID;

import android.Manifest;

import android.annotation.Nullable;

import android.app.Activity;

import android.content.ComponentName;

import android.content.DialogInterface;

import android.content.pm.PackageManager;

import android.content.pm.ServiceInfo;

import android.os.Bundle;

import android.os.UserHandle;

import android.provider.Settings;

import android.provider.SettingsStringUtil;

import android.util.Slog;

import android.view.accessibility.AccessibilityEvent;

import com.android.internal.app.AlertActivity;

import com.android.internal.app.AlertController;

import com.android.settings.R;

import com.android.settings.core.TouchOverlayManager;

/** @hide */

public class NotificationAccessConfirmationActivity extends Activity

        implements DialogInterface {

    private static final boolean DEBUG = false;

    private static final String LOG_TAG = "NotificationAccessConfirmationActivity";

    private int mUserId;

    private ComponentName mComponentName;

    private TouchOverlayManager mTouchOverlayManager;

    @Override

    protected void onCreate(@Nullable Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        mTouchOverlayManager = new TouchOverlayManager(this);

        mComponentName = getIntent().getParcelableExtra(EXTRA_COMPONENT_NAME);

        mUserId = getIntent().getIntExtra(EXTRA_USER_ID, UserHandle.USER_NULL);

        String pkgTitle = getIntent().getStringExtra(EXTRA_PACKAGE_TITLE);

        AlertController.AlertParams p = new AlertController.AlertParams(this);

        p.mTitle = getString(

                R.string.notification_listener_security_warning_title,

                pkgTitle);

        p.mMessage = getString(

                R.string.notification_listener_security_warning_summary,

                pkgTitle);

        p.mPositiveButtonText = getString(R.string.allow);

        p.mPositiveButtonListener = (a, b) -> onAllow();

        p.mNegativeButtonText = getString(R.string.deny);

        p.mNegativeButtonListener = (a, b) -> cancel();

        AlertController

                .create(this, this, getWindow())

                .installContent(p);

    }

    private void onAllow() {

        String requiredPermission = Manifest.permission.BIND_NOTIFICATION_LISTENER_SERVICE;

        try {

            ServiceInfo serviceInfo = getPackageManager().getServiceInfo(mComponentName, 0);

            if (!requiredPermission.equals(serviceInfo.permission)) {

                Slog.e(LOG_TAG,

                        "Service " + mComponentName + " lacks permission " + requiredPermission);

                return;

            }

        } catch (PackageManager.NameNotFoundException e) {

            Slog.e(LOG_TAG, "Failed to get service info for " + mComponentName, e);

            return;

        }

        final SettingsStringUtil.SettingStringHelper setting =

                 new SettingsStringUtil.SettingStringHelper(

                         getContentResolver(),

                         Settings.Secure.ENABLED_NOTIFICATION_LISTENERS,

                         mUserId);

        setting.write(SettingsStringUtil.ComponentNameSet.add(setting.read(), mComponentName));

        finish();

    }

    @Override

    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {

        return AlertActivity.dispatchPopulateAccessibilityEvent(this, event);

    }

    @Override

    public void cancel() {

        finish();

    }

    @Override

    public void dismiss() {

        // This is called after the click, since we finish when handling the

        // click, don't do that again here.

        if (!isFinishing()) {

            finish();

        }

    }

    @Override

    protected void onResume() {

        super.onResume();

        mTouchOverlayManager.setOverlayAllowed(false);

    }

    @Override

    protected void onPause() {

        super.onPause();

        mTouchOverlayManager.setOverlayAllowed(true);

    }

}